The protozoan parasite Trichomonas gallinae causes adult and nestling mortality in a declining population of European Turtle Doves, Streptopelia turtur

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Stockdale, JE ; Dunn, JC ; Goodman, SJ ; Morris, AJ ; Sheehan, DK ; Grice, PV ; Hamer, KC (2015)
  • Publisher: Cambridge University Press

Studies incorporating the ecology of clinical and sub-clinical disease in wild populations of conservation concern are rare. Here we examine sub-clinical infection by Trichomonas gallinae in a declining population of free-living European Turtle Doves and suggest caseous lesions cause mortality in adults and nestlings through subsequent starvation and/or suffocation. We found a 100% infection rate by T. gallinae in adult and nestling Turtle Doves (n = 25) and observed clinical signs in three adults and four nestlings (28%). Adults with clinical signs displayed no differences in any skeletal measures of size but had a mean 3·7% reduction in wing length, with no overlap compared to those without clinical signs. We also identified T. gallinae as the suggested cause of mortality in one Red-legged Partridge although disease presentation was different. A minimum of four strains of T. gallinae, characterized at the ITS/5·8S/ITS2 ribosomal region, were isolated from Turtle Doves. However, all birds with clinical signs (Turtle Doves and the Red-legged Partridge) carried a single strain of T. gallinae, suggesting that parasite spill over between Columbidae and Galliformes is a possibility that should be further investigated. Overall, we highlight the importance of monitoring populations for sub-clinical infection rather than just clinical disease.
  • References (41)
    41 references, page 1 of 5

    Altschul, S.F., Madden, T.L., Schäffer, A.A., Zhang, J., Zhang, Z., Miller, W. & Lipman, D.J. (1997) Gapped BLAST and PSI-BLAST: a new generation of protein database search programs. Nucleic Acids Research, 25, 3389 3402.

    Amin, A., Bilic, I., Liebhart, D. & Hess, M. (2014) Trichomonads in birds - a review. Parasitology, 141, 733 47.

    Baker, K. (1993) Identification Guide to European Non-Passerines. BTO Guide 24. British Trust for Ornithology, Thetford.

    BonDurant, R. & Honigberg, B. (1994) Trichomonads of veterinary importance. Parasitic Protozoa (ed J. Kreier), pp. 111 206. Academic Press, New York.

    Browne, S. & Aebischer, N. (2003) Habitat use, foraging ecology and diet of Turtle Doves Streptopelia turtur in Britain. Ibis, 145, 572 582.

    Browne, S.J. & Aebischer, N. (2004) Temporal changes in the breeding ecology of European Turtle Doves Streptopelia turtur in Britain, and implications for conservation. Ibis, 146, 125 137.

    Bunbury, N., Bell, D., Jones, C., Greenwood, A. & Hunter, P. (2005) Comparison of the InPouch TF culture system and wet-mount microscopy for diagnosis of Trichomonas gallinae infections in the pink pigeon Columba mayeri. Journal of Clinical Microbiology, 43, 1005 1006.

    Bunbury, N., Jones, C.G., Greenwood, A.G. & Bell, D.J. (2007) Trichomonas gallinae in Mauritian columbids: implications for an endangered endemic. Journal of Wildlife Diseases, 43, 399 407.

    Bunbury, N., Jones, C.G., Greenwood, A.G. & Bell, D.J. (2008a) Epidemiology and conservation implications of Trichomonas gallinae infection in the endangered Mauritian Pink Pigeon. Biological Conservation, 141, 153 161.

    Bunbury, N., Stidworthy, M.F., Greenwood, A.G., Jones, C.G., Sawmy, S., Cole, R.E., Edmunds, K. & Bell, D.J. (2008b) Causes of mortality in free-living Mauritian pink pigeons Columba mayeri, 2002-2006. Endangered Species Research, 9, 213 220.

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